Electrically operated razor



March 8, 1932. v A. A. GROTHE 1,848,170

ELEGTRIQALLY OPERATED RAZOR Filed May 13. 1930 fidezzzfar Ale THUR A. Gko THE Patented Mar. 8; 1932 1 ARTHUR A. enema, or OAK PARK, rumors, assrenon.

o, J cmeaeo. ILLINOIS OFFICE T9 WILLIAM :1. amazon, or

ELECTRICALLY OPERATED RAZOR Application filed m 13, 1930. semi 31 452,102.

My present invention relates to safety razors and has more particular reference to a razor that is automatically operated through the medium of'an electric current.

In certain types of electrically operated safety razors it is the practice to provide a hollow handle. or grip into which a unitary structure is inserted that comprises the mech anism which causes the device to vibrate. These parts are usually mounted between plugs that are disposed, when assembled, in opposite ends of the grip. It sometimes transpires that there may be a slight error or miscalculation in assembling the parts of the unit so that when the same is to be finally inserted into the handle for completing the structure it will be found that the ends of the unit are not inexact alinement and will cause a slight binding that may prevent the satisfactory or ready insertion of the unit com.- pletely into the grip. As the unitary structure is expensive to fabricate it obviouslywould be unprofitable to throw aside card an improperly assembled unit.

It is therefore an object of my present invent-ion to provide a unit of the character described that is capable of suflicient adjust ment to permit proper assembly thereof with the grip." This I accomplish in a simple manner by providing a hinge connection between the parts which create the vibration and the plug or other member that is screwed into or disone of the ends of the grip. Other objects consist in providing simple means for ad]usting the movement of the vibratory arm, as well as efl'ective means for rigidly mounting the electromagnet and other parts of the unit. Further objects reside in providing a safety razor structure that is novel in the arrangement and construction of the parts, is dependable in operation, will not readily get out of order and which is effective in performing the service for which it is intended.

I prefer to carry out my invention and to accomplish the several objects thereof in substantially the manner hereinafter fully described and as more particularly pointed out in the claims, reference to be made to the accompanging drawings \that form a part of this speci cation.

In the drawings Figure 1 is a longitudinal view in elevation of the operating parts of my razor with the handle or grip shown in section.

Figure 2 is a view of the operative parts removed from the handle and looking at the same at a right angle to Figure 1. Figure 3 is a fragmentary view of the upper portion of the unit showing, in an exaggerated manner, the hinging action of the parts.

It will be understood that the drawings are more or less-schematic and illustrate a typical or preferred form in which my invention may be made. In said drawings similar reference characters have been used to designate the same parts wherever they'appear throughout the several views.

The handle or grip, as shown in Figure 1, compri'ses an elongated tube 5 having a wide bore and at its lower end the bore is reduced to provide a smaller, central aperture 6 at that end of the grip with a shoulder 7 ad-- is; threaded upon its interior to receive the threaded plug 8 that carries the tool-post 9 and the latter is surrounded by a conical or other suitably shaped cap 10 that screws upon the protruding portion of the plug 8.

The electrical parts, which are housed within the grip consist of an electromagnet formed with a metallic core 11 having an energizing winding 12 thereon between the upper and lower poles or head pieces 13 and 14 respectively. The core 11 extends through the lower pole 1 1 and through a heavy metal block 15 in which it is anchored by means of the headless set screw 16-that extends laterally into said block. The lower end of the core is axially bored and threaded to receive the screw or bolt 17 to anchor the structure upon a lower plug 18. Theplug 18, like the upper plug 8,

'is made from insulating material and it rests against the shoulder? when the unit has been inserted in the grip and thereby closes the opening or aperture 6 hereinbefore mentioned. i

The inner face of the plug 18 is provided with a shallow groove 19 upon its inner face to receive the adjacent end of the block 15 which is of rectangular section and conveniently fits therein, thus preventing rotational movement of the assembled parts.

An armature arm or bar 20 is disposed alongside the electromagnet and is influenced thereby to vibrate in a direction towards the axis of the core or in a plane that is radial thereto. The lower end of the armature bar is carried upon the adacent end of a fiat spring 21 which in turn is connected to the vertical side face of block 15. A spring contact finger 22 is likewise connected to the block 15 and it is separated from the spring and from the screws 23 that connect the parts to the block by insulating plates 24.

At the upper end of the armature bar 20 there is a weight or head 25 that is moved towards an abutment 26 whenever the armature is attracted towards the electro-magnet, and in order to prevent too great a blow or impact between these parts a cushion or pad 27 of rubber or other suitable material is interposed between the abutment and the head. This arrangement also absorbs or dissipates most of the noise that would otherwise result from the vibration of the bar.

Suitable terminal rods 28 and 29 are imbedded in and pass through the lower plug 18, and are made irregular or zigzag shaped so that their inner ends will straddle or be disposed alongside the block 15 while their outer ends will be close together and will be positioned in the opening or aperture 6 in the lower end of the grip where they may be engaged with tubular terminal elements connected with wire leads from the source of electrical supply.

The inner end of terminal rod 28 is connected by a conductor 30 to the energizing winding 12, and the terminal rod 29 is connected to the contact finger 22 by a conductor 31. Contact pieces 32 and 33 are mounted respectively upon the free end of the finger 22 and upon the adjacent portion of the vibrator or armature bar 20 and comprise the makeand-break devices for the circuit.

From the foregoing it will be apparent that the electro-magnet, the armature bar, the base block and the lower plug form a unitary structure, all of the parts of which are anchored and carried by the said plug 18 so that the entire structure may be handled as a unit forinsertion in or removal from the hollow grip. The upper portion of the unit is also con nected with the upper plug 8 prior to insertion into the grip, and in the event of any slight deviation or error in assembling these parts there may be a binding or wedging due to a slight transaxial displacement of the parts.

In order to overcome this I prefer to flexibly connect the electromagnet or other portion of the unit to the upper plug 8; This connection may be in the form of a hinge such as shown which consists of a pair of arms 34 that have their upper ends secured to the plug 8 by screws or otherwise and which exten down toward the pole or head piece 13. The other members of the hinge are in the form of upwardly extending ears 35 that are a part of and are bent upwardly from the plate 36 from which the abutment member 26 extends. The ears 35 are bored, as, are also the adjacent ends of the arms 34, to receive the pivots 37. V

The lower ends of the arms 34 are provided with short lateral'fianges 38 that extend upon each side of the respective ears 35 and limit to a certain extentthe swinging movement of the parts relative to each other. In order to stabilize the arms 34 the same are seated against a shoulder 39 on the under surface of the plug 8, but it will be obvious that, in lieu of the mounting shown, said arms may be imbedded or anchored in the insulating material of which the plug 8 is formed when the latter is cast. When the unit made in this manner is inserted into the bore of the grip 5, and should it transpire that the parts are not accurately assembled, the hinging of the arms 34: with respect to the balance of the unit will permit the plug 8 to be screwed into the bore of the handle or grip. A greatly exaggerated View of such a structure is shown in Fig. 3 to illustrate the hinging of the parts.

The plate 36 from which the abutment 26 and the hinge ears 35 are formed is secured to the upper end of the core by the screw 40, and for the purpose of preventing rotation of the parts as well as to further anchor the plate 36 the latter has a downwardly bent flange or lip 41 that engages with a cut-ofi' straight edge of the head piece or pole 13. This plate 36 is thereby formed U-shaped in cross-section through the hinge ears 35 and somewhat zigzag in cross-section through the abutment 26 and lip 41.

It will be obvious to others skilled in the art that modifications of the structure disclosed may be made without departing from the principles involved. The detailed description and drawings herein are given for the purpose of clearness of understanding only and no unnecessary limitations are to be understood therefrom, but-the claims are to be construed as broadly as permissible in view of the prior art.

What I claim is 1. A device of the kind described comprising a hollow grip, an electromagnet core therein having an energizing winding, a vibratory armature bar disposed alongside said winding, a base to which said core and bar are connected, an abutment adapted to be engaged by the free end of said bar, a plug at one end of said grip, and pivotal means connecting the aforesaid operating structure to said plug to permit relative movement between said plug and the structure during assembly with said grip.

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2. A device of the kind described comprising a hollow grip, a plug adjacent an end thereof, an electrically operated structure Within said grip for creating vibrations, pivotal members connecting said plug to an en of said electrically operated structure to permit relative adjustment of said parts during insertion into saiu grip, and a base structure secured to the other end of said electrically operated structure and seated in the end of the grip opposite the plug.

3. A device of the kind described comprising a hollow grip, a plug at one end thereof, an electromagnet core within said grip and having an energizing winding, and connected to said plug, a vibratory armature supported by said plug, an abutment carried by said core, a plug at the'end of the grip opposite the first plug, and pivotal elements connecting said second plug to the core whereby said core, armature and abutment may be moved transverse to the axis of the core for adjustment when being inserted in the grip.

4. A device'of the kind described comprising a hollow grip, upper and lower plugs at the ends thereof, an electromagnet core mounted on the lower plug and having pivotal devices connecting it with the upper plug,.said core having an energizing winding, a vibratory armature and a coacting abutment cooperating with said core, and electric terminals extending through one of said plugs and having connection respectively with said winding and armature, the pivotal devices between said core and upper plug permitting independent lateral movement of the plug with respect to the core and its associated parts during insertion and assembly with said gr p. I

5. A device of the kind described comprising a hollow grip, a plug at an end thereof, an electromagnet core spaced from said lug and having an energizing winding, a vi ratory armature coacting with said core, a makeand-break device coacting with said armature, common means to which said magnet, armature and device are connected, a plate at the end of said magnet nearest said plug, ears extended from the plate towards the plug, and arms depending from the plug and pivotally secured to said ears to permit relative movement between the plug and the parts on saidcommon means during insertion into the p 6. ing an electromagnet core and an energizing coil thereon, a vibratory armature bar yieldably mounted alongside the before-mentioned parts, a make-and-break device associated with said bar, electric conductors connected respectively to said device and said coil, a plate having a pair of up-turned flanges and an intermediate up-turned flange, the latter flange providing an abutment engaged by arms to which said pair of flanges vibratory motion,

A device of the kind described comprisare pivotally connected, and means for supporting said arms.

7. In an electro-vibratory device of the character described including an electromagnet core having an ener izing coil and a vibratory bar associated t erewith, a plate secured to the electro-magnet having a pair of. oppositelydisposed up-turned flanges, piv-' otal means connecting said flanges to a support body, and an upstanding abutment intermediate said flanges that is engaged by said vibratory bar.

8. In a device of the kind described a plug member adapted to close the end of a hollovx grip, a tool-post projecting therefrom, an electrically-operated structure for creating vibratory motion, and pivotal devices connecting said structure to said plug member to permit relative movement between said structure and said plug.

9. In a device of the kind described a lug member adapted to close the end of a ho low grip, a tool-post projecting therefrom, an electrically-operated structure for creating ivotal devices connecting said structure to sald plug member to permit relative movement between said structure and said plu devices or limiting movement.

Signed at Chicago, Cook County, the 1st day of April, 1930.

ARTHUR A. GROTHE.

the aforesaid relative lllinois,

and stops adjacent said pivotal 

